Improvement in spindle-steps



W. ,C.,CROSS.

Improvement in Spindle Steps.

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Patented March 5,1872.

Unteren @Iraans IVILLIAM O. CROSS, OF BOSTON, MASSACHUSETTS, ASSIGNOR TOHIMSELF AND EPHRAIM C. CROSS, OF SAME PLAGE.

IMPROVEMENT IN SPINDLE-STEPS.

Spccilication forming part of Letters Patent No.124,255, dated March 5,1872.

To all whom it may concern:

I, WILLIAM C. Cnoss, of Boston, in the county ot' Sutl'oll; and State ofMassachusetts, have invented acertain new and useful Step 7 or VerticalJournal-BOX, of which the following is a specication:

The Nature of the Intention.

The nature of my invention may be best understood by reference to theaccompanying drawing and the following specification.

Description of thc Accompanying Drawing.

Figure lis a vertical section of my improved step. Fig. 2 is a verticalsectiouof the same taken on a pla-ne at right angles to the plane of thesection ot' Fig. 1. Fig. 3 is a plan.

General Description'.

My invention is for that class of supports or bearings for revolvingvertical shafts called steps.

In the drawing, B represents the step, the hollow chamber L of whichreceives the lower end of the shaft. he outer chamber E, formed by theoutside of the step and the interior of the housing` A, constitutes anoil-cup. D D, Fig. l, are holes for iilling the cup E E with oil. Theupper end ot the chamber L is provided with a fillet or circular recess,M, into which dust and surplus oil may gather from the revolvingshaft.Two channels, N N Figr 2, lead from the fillet M to the oil-chamber E,through which the overliowin g oil may descend.

K is a small duct leading from the bottom of the chamber L through thestep, as shown. H H, Fig. 2, are small ducts leading from theoil-chamber E to the duct K, and thence to the chamber L. I is aset-screw, made sutciently strong to support, in connection with thescrew-thread at the top of B, the weight of the step B and the shaftwithin it. By this arrangement it will be seen that, as the step orshaft becomes worn, the step may be moved upward vertically, so as tomake up for the loss by wear. To adjust the step, I have only to unscrewit so that it shall rise to the desired height, and then to move up theset-screw P until it comes to a bearing.

The operation of the oiling device is so obvious as scarcely to needexplanation. The chamber E being full, the oil will have a tendency toiiow upward around the shaft in L, and thus keep it always lubricated,the surplus oil flowing back through the ducts N N. The ducts K H H maybe cleared out by removing the screw P and inserting a wire.

, I claim as my invention- The combination of the step B with the housing A, when constructed and applied together, as specified, so as toform an annular chamber, E, communicating, by ducts N N and H H, withthe journal, and also provided with the screw-plug P, the whole arrangedto opera-te substantially as described.

IVitnesses: WILLIAM C. CROSS. y

WILLIAM EDsoN, FRANK G. PARKER..

